"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : GSC功能模块
Case Name   : 备机gs_gsc_clean清除当前连接库的缓存信息
Create At   : 2023/05/24
Owner       : @peilinqian
Description :
    1、打开gsc开关;
    2、重启数据库生效;
    3、创建数据库;
    4、创建表;
    5、备机查询表；
    6、备机查看syscache占用情况;
    6.1、查看gs_gsc_memory_detail占用情况;
    6.2、查看gs_gsc_dbstat_info占用情况;
    6.3、查看gs_gsc_table_detail占用情况;
    6.4、查看gs_gsc_catalog_detail占用情况;
    7、备机连接指定库，删除该库缓存信息;
    8、备机查看syscache占用情况;
    8.1、查看gs_gsc_memory_detail占用情况;
    8.2、查看gs_gsc_dbstat_info占用情况;
    8.3、查看gs_gsc_table_detail占用情况;
    8.4、查看gs_gsc_catalog_detail占用情况;
Expect      :
    1、打开gsc开关; 修改成功
    2、重启数据库生效; 重启成功
    3、创建数据库; 创建成功
    4、创建表并查询; 操作成功
    6、备机查看syscache占用情况；
    6.1、查看gs_gsc_memory_detail占用情况; 指定库结果等于1
    6.2、查看gs_gsc_dbstat_info占用情况; 查询结果包括0库和指定库，指定库查询结果等于1
    6.3、查看gs_gsc_table_detail占用情况; 查询结果包括0库和指定库,指定库查询结果大于0
    6.4、_gsc_catalog_detail占用情况; 查询结果包括0库和指定库,指定库查询结果大于0
    7、备机连接指定库，删除该库缓存信息; 删除成功
    8、备机查看syscache占用情况; 缓存信息正确
    8.1、查看gs_gsc_memory_detail占用情况; 指定库结果等于1
    8.2、查看gs_gsc_dbstat_info占用情况; 查询结果包含0库和指定库，指定库查询结果等于1
    8.3、查看gs_gsc_table_detail占用情况; 查询结果只有0库，指定库查询结果等于0
    8.4、查看gs_gsc_catalog_detail占用情况; 查询结果包含0库和指定库，指定库查询结果大于0
History     :
"""
import os
import time
import unittest

from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger

pri_sh = CommonSH('PrimaryDbUser')
node_num = pri_sh.get_node_num()


@unittest.skipIf(node_num < 3, '非1主2备环境不执行')
class GscTestCase(unittest.TestCase):
    def setUp(self):
        self.log = Logger()
        self.log.info("----this is setup----")
        self.log.info(f'----{os.path.basename(__file__)}:start----')
        self.db_name = 'db_gsc0051'
        self.tb_name = 'tb_gsc0051'
        self.com = Common()
        self.constant = Constant()
        self.sta1_sh = CommonSH('Standby1DbUser')

    def test_main(self):
        step_txt = '----step0:查看数据库状态是否正常;----'
        self.log.info(step_txt)
        status_result = pri_sh.get_db_cluster_status('status')
        self.assertTrue(status_result, '执行失败:' + step_txt)
        step_txt = '----step0:查看enable_global_syscache初始配置值;----'
        self.log.info(step_txt)
        self.init_para1 = self.com.show_param("enable_global_syscache")

        if self.init_para1 == 'off':
            step_txt = '----step1:打开gsc开关; expect:修改成功----'
            self.log.info(step_txt)
            result = pri_sh.execute_gsguc('set',
                                          self.constant.GSGUC_SUCCESS_MSG,
                                          f"enable_global_syscache= on")
            self.assertTrue(result, '执行失败:' + step_txt)

            step_txt = '----step2:重启数据库生效; expect:重启成功----'
            self.log.info(step_txt)
            restart = pri_sh.restart_db_cluster()
            self.assertTrue(restart, '执行失败:' + step_txt)
            self.is_reset_para = True
        else:
            step_txt = '----gsc开关设置正常，跳过step1、step2----'
            self.log.info(step_txt)
            self.is_reset_para = False

        step_txt = f'----step3:创建数据库; expect:创建成功----'
        self.log.info(step_txt)
        create_db = f'drop database if exists {self.db_name};' \
            f'create database {self.db_name};'
        create_result = pri_sh.execut_db_sql(create_db)
        self.log.info(create_result)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS, create_result,
                      '执行失败:' + step_txt)

        step_txt = '----step4:创建表; expect:操作成功----'
        self.log.info(step_txt)
        create_tb_sql = f"create table {self.tb_name} " \
            f"(c_integer integer,c_tinyint tinyint," \
            f"c_smallint smallint,c_binary_integer binary_integer," \
            f"c_bigint bigint,c_numeric numeric(10,4)," \
            f"c_number number(10,4),c_smallserial smallserial);"
        create_result = pri_sh.execut_db_sql(create_tb_sql,
                                             dbname=f'{self.db_name}')
        self.log.info(create_result)
        self.assertIn(self.constant.TABLE_CREATE_SUCCESS, create_result,
                      '执行失败:' + step_txt)

        self.log.info('--等待主备同步--')
        self.sta1_sh.check_location_consistency('standby', node_num)

        step_txt = '----step5:备机查询表; expect:查询成功----'
        self.log.info(step_txt)
        select_sql = f"select * from {self.tb_name};"
        create_result = self.sta1_sh.execut_db_sql(select_sql,
                                                   dbname=f'{self.db_name}')
        self.log.info(create_result)
        self.assertIn('0 rows', create_result, '执行失败:' + step_txt)

        step_txt = '----step6:备机查看syscache占用情况; expect:缓存信息正确----'
        self.log.info(step_txt)
        db_oid = f"(select cast((select oid from pg_database where " \
            f"datname = '{self.db_name}') as text))"
        check_sql1 = f"select count(*) from gs_gsc_memory_detail where " \
            f"db_id = ({db_oid});"
        check_sql2 = f"select count(*) from gs_gsc_dbstat_info({db_oid});"
        check_sql2_1 = f"select count(*) from gs_gsc_dbstat_info({db_oid}) " \
            f"where database_name = '{self.db_name}';"
        check_sql3 = f"select count(*) from gs_gsc_table_detail({db_oid});"
        check_sql3_1 = f"select count(*) from gs_gsc_table_detail" \
            f"({db_oid}) where database_name = '{self.db_name}';"
        check_sql4 = f"select count(*) from gs_gsc_catalog_detail({db_oid});"
        check_sql4_1 = f"select count(*) from gs_gsc_catalog_detail" \
            f"({db_oid}) where database_name = '{self.db_name}';"

        step_txt = '----step6.1:查看gs_gsc_memory_detail占用情况; ' \
                   'expect:指定库结果等于1----'
        self.log.info(step_txt)
        check_result6_1 = self.check_select(check_sql1)
        self.assertEqual(1, check_result6_1, '执行失败:' + step_txt)
        step_txt = '----step6.2:查看gs_gsc_dbstat_info占用情况; ' \
                   'expect:查询结果包括0库和指定库，指定库查询结果等于1----'
        self.log.info(step_txt)
        check_result6_2 = self.check_select(check_sql2)
        self.assertEqual(2, check_result6_2, '执行失败:' + step_txt)
        check_result6_2_1 = self.check_select(check_sql2_1)
        self.assertEqual(1, check_result6_2_1, '执行失败:' + step_txt)
        step_txt = '----step6.3:查看gs_gsc_table_detail占用情况; ' \
                   'expect:查询结果包括0库和指定库,指定库查询结果大于0----'
        self.log.info(step_txt)
        check_result6_3 = self.check_select(check_sql3)
        self.assertGreater(check_result6_3, 0, '执行失败:' + step_txt)
        check_result6_3_1 = self.check_select(check_sql3_1)
        self.assertGreater(check_result6_3_1, 0, '执行失败:' + step_txt)
        step_txt = '----step6.4:查看gs_gsc_catalog_detail占用情况; ' \
                   'expect:查询结果包括0库和指定库,指定库查询结果大于0----'
        self.log.info(step_txt)
        check_result6_4 = self.check_select(check_sql4)
        self.assertGreater(check_result6_4, 0, '执行失败:' + step_txt)
        check_result6_4_1 = self.check_select(check_sql4_1)
        self.assertGreater(check_result6_4_1, 0, '执行失败:' + step_txt)

        step_txt = '----step7:备机连接指定库，删除该库缓存信息; expect:删除成功----'
        self.log.info(step_txt)
        clean_sql = f"select * from gs_gsc_clean({db_oid});"
        clean_result = self.sta1_sh.execut_db_sql(clean_sql,
                                                  dbname=f'{self.db_name}')
        self.log.info(clean_result)
        self.assertEqual(clean_result.splitlines()[-2].strip().lower(), 't',
                         '执行失败:' + step_txt)

        step_txt = '----step8:备机查看syscache占用情况; expect:缓存信息正确----'
        self.log.info(step_txt)
        step_txt = '----step8.1:查看gs_gsc_memory_detail占用情况; ' \
                   'expect:指定库结果等于1----'
        self.log.info(step_txt)
        check_result8_1 = self.check_select(check_sql1)
        self.assertEqual(1, check_result8_1, '执行失败:' + step_txt)
        step_txt = '----step8.2:查看gs_gsc_dbstat_info占用情况; ' \
                   'expect:查询结果包含0库和指定库，指定库查询结果等于1----'
        self.log.info(step_txt)
        check_result8_2 = self.check_select(check_sql2)
        self.assertEqual(2, check_result8_2, '执行失败:' + step_txt)
        check_result8_2_1 = self.check_select(check_sql2_1)
        self.assertEqual(1, check_result8_2_1, '执行失败:' + step_txt)
        step_txt = '----step8.3:查看gs_gsc_table_detail占用情况; ' \
                   'expect:查询结果只有0库，指定库查询结果等于0----'
        self.log.info(step_txt)
        check_result8_3 = self.check_select(check_sql3)
        self.assertLess(check_result8_3, check_result6_3, '执行失败:' + step_txt)
        self.assertGreater(check_result8_3, 0, '执行失败:' + step_txt)
        check_result8_3_1 = self.check_select(check_sql3_1)
        self.assertEqual(0, check_result8_3_1, '执行失败:' + step_txt)
        step_txt = '----step8.4:查看gs_gsc_catalog_detail占用情况; ' \
                   'expect:查询结果包含0库和指定库，指定库查询结果大于0----'
        self.log.info(step_txt)
        check_result8_4 = self.check_select(check_sql4)
        self.assertLess(check_result8_4, check_result6_4, '执行失败:' + step_txt)
        self.assertGreater(check_result8_4, 0, '执行失败:' + step_txt)
        check_result8_4_1 = self.check_select(check_sql4_1)
        self.assertGreater(check_result8_4_1, 0, '执行失败:' + step_txt)

    def check_select(self, sql):
        """
        :param: sql: 查询对象sql
        :return: 查询结果count数
        """
        select_result = self.sta1_sh.execut_db_sql(sql)
        self.log.info(select_result)
        return int(select_result.splitlines()[-2].strip())

    def tearDown(self):
        step_txt = '----this is teardown----'
        self.log.info(step_txt)
        step1_txt = '----清理数据库; expect:清理成功----'
        self.log.info(step1_txt)
        drop_cmd = f"drop database if exists {self.db_name};"
        drop_result = pri_sh.execut_db_sql(drop_cmd)
        self.log.info(drop_result)

        if self.is_reset_para:
            self.step2_txt = '----恢复参数为初始值并查询; expect:设置成功----'
            self.log.info(self.step2_txt)
            self.msg1 = pri_sh.execute_gsguc('set',
                                             self.constant.GSGUC_SUCCESS_MSG,
                                             f"enable_global_syscache "
                                             f"={self.init_para1}")

            self.step3_txt = '----重启数据库生效; expect:重启成功----'
            self.log.info(self.step3_txt)
            self.restart = pri_sh.restart_db_cluster()
            self.step4_txt = '----查询数据库状态; expect:状态正常----'
            self.log.info(self.step4_txt)
            self.status_result = pri_sh.get_db_cluster_status('status')

        self.log.info(f'----{os.path.basename(__file__)}:end----')
        self.assertIn(self.constant.DROP_DATABASE_SUCCESS, drop_result,
                      "执行失败" + step_txt + step1_txt)
        if self.is_reset_para:
            self.assertTrue(self.msg1, '执行失败:' + self.step2_txt)
            self.assertTrue(self.restart, '执行失败:' + self.step3_txt)
            self.assertTrue(self.status_result, '执行失败:' + self.step4_txt)
